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PDF LD6805 Data sheet ( Hoja de datos )
| Número de pieza | LD6805 | |
| Descripción | Low-dropout regulators | |
| Fabricantes | NXP Semiconductors | |
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LD6805 series
Low-dropout regulators, high PSRR, 150 mA
Rev. 2 — 25 June 2012
Product data sheet
1. Product profile
1.1 General description
The LD6805 series is a small-size Low DropOut regulator (LDO) family with ultra high
Power Supply Rejection Ratio (PSRR) of 75 dB. The voltage drop is 250 mV at 150 mA
current rating.
Operating voltages can range from 2.3 V to 5.5 V. The devices are available with fixed
output voltages between 1.2 V to 3.6 V.
The LD6805K/xxH devices show a high-ohmic state at the output pin when set to disabled
mode. The LD6805K/xxP devices contain a pull-down switching transistor to provide a
low-ohmic output state (auto discharge function) in disabled mode.
The LD6805 series devices are available in a 1 1 mm DFN plastic package making them
ideal for use in portable applications requiring component miniaturization. All devices are
manufactured in monolithic silicon technology.
1.2 Features and benefits
150 mA output current rating
75 dB PSRR at 1 kHz
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Input voltage range 2.3 V to 5.5 V
Fixed output voltage between 1.2 V to 3.6 V
Dropout voltage 250 mV at 150 mA output rating
Low quiescent current in shutdown mode (typical 0.1 A)
40 V RMS output noise voltage (typical value) at 10 Hz to 100 kHz
Turn-on time 150 s
LD6805K/xxH: high-ohmic (3-state) output state when disabled
LD6805K/xxP: low-ohmic output state when disabled (auto discharge function)
Integrated ESD protection up to 6 kV Human Body Model (HBM)
DFN1010C-4 (SOT1194-1) plastic package with a size of 1 1 0.55 mm
Pb-free, RoHS compliant and free of halogen and antimony (dark green compliant)
1.3 Applications
Analog and digital interfaces requiring lower than standard supply voltages in mobile
appliances such as smart phones, mobile phone handsets and cordless telephones.
Other typical applications are digital still cameras, mobile internet devices, personal
navigation devices and portable media players.
Datasheet pdf - http://www.DataSheet4U.co.kr/
1 page  
NXP Semiconductors
LD6805 series
Low-dropout regulators, high PSRR, 150 mA
5. Limiting values
Table 5. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
Min Max Unit
VIN
Ptot
Tstg
Tj
Tamb
VESD
voltage on pin IN
total power dissipation
storage temperature
junction temperature
ambient temperature
electrostatic discharge voltage
4 ms transient
human body model level 6
machine model class 3
0.5
[1] -
55
40
40
[2] -
[3] -
+6.0
400
+150
+125
+85
6
400
V
mW
C
C
C
kV
V
[1] The (absolute) maximum power dissipation depends on the junction temperature Tj. Higher power dissipation is allowed with lower
ambient temperatures. The conditions to determine the specified values are Tamb = 25 C and the use of a two layer PCB.
[2] According to IEC 61340-3-1.
[3] According to JESD22-A115C.
6. Recommended operating conditions
Table 6. Operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Tamb
Tj
Pin IN
ambient temperature
junction temperature
VIN
Pin EN
voltage on pin IN
VEN voltage on pin EN
Pin OUT
CL(ext) external load capacitance
Conditions
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[1] See Section 10.1 “Output capacitor values”.
7. Thermal characteristics
Min Typ Max Unit
40 -
+85 C
- - +125 C
2.3 -
5.5 V
0-
VIN V
[1] 0.7 1.0 -
F
Table 7.
Symbol
Rth(j-a)
Thermal characteristics
Parameter
thermal resistance from junction to ambient
Conditions
Typ
[1][2] 250
Unit
K/W
[1] The overall Rth(j-a) can vary depending on the board layout. To minimize the effective Rth(j-a), all pins must have a solid connection to
larger Cu layer areas for example to the power and ground layer. In multi-layer PCB applications, the second layer is used to create a
large heat spreader area directly below the LDO. If this layer is either ground or power, it is connected with several vias to the top layer
connecting to the device ground or supply. Avoid the use of solder-stop varnish under the chip.
[2] Use the measurement data given for a rough estimation of the Rth(j-a) in your application. The actual Rth(j-a) value can vary in applications
using different layer stacks and layouts.
LD6805_SER
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 25 June 2012
© NXP B.V. 2012. All rights reserved.
5 of 20
Datasheet pdf - http://www.DataSheet4U.co.kr/
5 Page 
NXP Semiconductors
LD6805 series
Low-dropout regulators, high PSRR, 150 mA
13. Package outline
Plastic thermal enhanced ultra thin small outline package; no leads;
4 terminals; body 1 x 1 x 0.55 mm
SOT1194-1
X
D
BA
terminal 1
index area
1
e
b
2
EA
A1
www.DataSheet.net/
v CAB
wC
detail X
y1 C
A3
C
y
terminal 1
index area
L
Dimensions
4
3
0
scale
1 mm
Unit(1)
A A1 A3 b D Dh E Eh e k L v w y y1
max 0.55 0.05 0.152 0.30 1.05 0.53 1.05 0.53
0.30
mm nom
0.25 1.00 0.48 1.00 0.48 0.65
0.25 0.1 0.05 0.05 0.05
min 0.00 0.05 0.20 0.95 0.43 0.95 0.43 0.2 0.20
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
Outline
version
References
IEC
JEDEC
JEITA
European
projection
SOT1194-1
---
---
---
Fig 8. Package outline DFN1010C-4 (SOT1194-1)
LD6805_SER
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 25 June 2012
sot1194-1_po
Issue date
11-05-30
12-05-22
© NXP B.V. 2012. All rights reserved.
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